Home / 20,990.44-31,529.40-17,709.94

Finding the Fourth Proportional to 20,990.44, 31,529.40 and 17,709.94

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Solution

The fourth proportional to 20,990.44, 31,529.40 and 17,709.94 is: 26,601.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,990.44 : 31,529.40 = 17,709.94 : x
  2. Step 2: Convert to fraction form
    20,990.44/31,529.40 = 17,709.94/x
  3. Step 3: Cross multiply
    20,990.44x = 31,529.40 × 17,709.94
  4. Step 4: Simplify right side
    20,990.44x = 558,383,782.24
  5. Step 5: Solve for x
    x = 558,383,782.24/20,990.44
  6. Step 6: Final answer
    x = 26,601.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.